Regulating-gear.



N'o. 7|2,028. r Patented 0st. 28, i902.

W. A. P. WERNER.

REGULATING GEAR.

(Application filed May 22, 1902.;

(Nu Model.)

:mi l mi-..

Il III UNITED VSTATES PATENT OFFICE.y

VILLIAM ARTHUR PERCY WERNER, OF LONDON, ENGLAND. l

REGULATlNG-G EAR.

SPECIFICATION formingpart of Letters Patent No. 712,028, dated October 28, 1902.

4.llpplioaton led May `22, 1902.

.To all whom it may concern.-

ya speciication.

This invention relates to regulating-gear for the regulation or adjustment of the stroke of reciprocating parts, and particularly for the regulation or adjustment ofthe stroke of pumps such as are employed for feeding water to steam-generators.

The invention has for its'object to provide means for regulating or adjusting the length of stroke by hand or automatically, so that the rate or amount of feed may be altered or stopped, as required, and so as to avoid the disadvantages attendant upon the use of other regulators which are employed in connection with pumps having a constant stroke.

According to the invention the reciprocating movement is communicated by means of a lever, one of whose extremities is secured to the reciprocating part, while the opposite extremity serves as a fulcrum, and the lever is operated by such means as an eccentric or crank. The fulcrum of the lever is retained in position by means of two oppositely-disposed bearing-faces, which are capable of separation one from the other in order to release the fulcrum, so that instead of the movement of the eccentric, crank, or other driving part resultingiin a full reciprocation of the pump or reciprocating part a movement will result to the fulcrum to an extent dependent upon the separation of the bear ing-faces. It will be understood that if the separation of the bearing-faces permits of a full movement of the fulcrum the opposite extremity of the lever, which in that event acts as a fulcrum, is held stationary, so that thereby the reciprocation of the pump, pis-A ton, or plunger may be entirely stopped or reciprocated, as required, to give the necessary amount of feed. The separation of the bearing-faces of the fulcrum may be eiected Serial No. 108,562. (No model.)

According to the invention, also,

provide a lost motion for the projecting part to any extent required, the length of the slot being such that the projecting part may rej ciprocate idly within the slot, and thereby communicate no movement. The upper extremityof the screwed spindle may be arranged to slide within a bracket and may be provided with a keyway, so that a key may be employed to secure a pinion tothe spindle as a means for rotating it by hand or automatically from a regulator or governor. The invention also consists in the detailed construction al features hereinafter described as applied.

The invention is illustrated in the accompanying drawings, in which-- Figure 1 represents in elevation a coinbined feed-water pump and oil-pump provided according to the invention. Fig. 2 is a plan corresponding thereto, in which the` plunge of the feed-water pump is shown in the opposite position to that indicated in Fig. 1.

In carrying the invention, as illustrated in` the drawings, into eftect'in the provision of a feed-water pump a, and oil-pump b for use on a steam-generator fired with liquid fuel I arrange the pumps a and b side by side, with the cylinder and pistons parallel. In proximity to the pistons l provide a double bracket c, suitably secured in position and carrying an eccentric d, upon which a lever e is mounted. to a bifurcated link f, whose opposite extremity is secured tothe head of the piston or plunger g of the feed-water pump a. The opposite extremity of the lever c forms a fulcrum and is arranged between two oppositelydisposed bearing-faces 7L and t', provided upon blocks 7L r',sliding within guides j, but mount- One extremity of this lever is connected IOO ed axially also upon a spindle screwed with right and left hand threads, as illustrated in both figures, so that upon the rotation of the screwed spindle the blocks h t" may be separated within the guides j. The screwed spindle aforesaid may be rotated by any suitable hand-operated gear or by any other gear deriving motion through pressure in the steamgenerator or from the governor of the motor.

The invention is not limited to the particular arrangement of the lever e illustrated, for it is obvious that such may be modified without departing from the invention. For example, the eccentric could be mounted on the lever at its lower extremity, and the plunger could then be connected thereto midway .between the eccentric and the upper fulcrnm.

The piston or plunger l of the oil-pumpb has its head provided with a longitudinal slot m, through which axially passes a screwed spindle n. A projecting arm o, provided upon the feed-pump plunger g, projects within this slotm and communicates reciprocating motion to the plunger Z. The outer end n of the screwed spindle n slides within a fixed bracket la, which is recessed so as to form two lateral parts, between which a pinion p' is arranged upon the spindle fn, which pinion is keyed to the spindle, so that on its rotation the opposite extremity of the spindle is screwed into or out of the slot m, so as to provide a lost motion to a more or less extent for the projecting arm 0. The pinion p' may be operated by hand or by automatic means.

In operation it will be understood that motion is communicated to the eccentric or crank d, upon which the lever e before referred to is arranged, so that one extremitythat is, the lower extremity-of the lever e is reciprocated, and if the opposite upper extremity of the lever e is retained by means of the bearing-faces h t' the full extent of reciprocation will be communicated to the feedpump plunger g. Should the blocks 7L and t" be separated, however, the fulcrnm of the lever e reciprocates on the rotation of the eccentric CZ, so that the reciprocation of the feed-pump plunger g is restricted. If the bearing-faces h and t' are separated to the maxi mum extent, no movement is communicated to the feed-pump plunger g. The movement of the feed-pump plungerg effects the movement of the oil-pump plunger Z to an extent corresponding to the length of the screwed spindle fn, projecting into the slot m within the plunger-head. If the extremity of the screwed spindle 'a passes fully into the slot, the full extent of the movement is communicated to the oil-pump plunger l, that is communicated to the plunger g; but if the screwed spindle e is withdrawn from the slot no movement whatever is communicated to the oilpump plunger.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed-water pumps, comprising in combination, a lever, means for giving to said lever at one point a constant reciprocation, a member connected to said lever at another point, said member being capable of reciprocation by said lever, a fulcrnm on said lever capable of movement on reciprocation thereof, and means for limiting the path taken by said fulcrnm on the reciprocation of said lever, substantially as described.

2. Apparatus for regulating the stroke of -reciprocating parts such as the plungers of feed-water pumps, comprising in combination, a lever, means for giving to said lever at one point a constant reciprocation, a member connected to said lever at another point, said member being capable of reciprocation by said lever, a fulcrnm on said lever capable of movement on reciprocation thereof, means for limiting the path taken by said fulcrnm on reciprocation of said lever, said means comprising two surfaces, and means for adjusting the distance apart of said sur faces, substantially as described.

3. Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed-water pumps, comprising in combination, alever, means for giving to said lever at one point a constant reciprocation, a member connected to said' lever at another point, said member being capable of reciprocation by said lever, a fulcrum on said lever capable of movement on reciprocation thereof, means for limiting the path taken by said fulcrnm on reciprocation of said lever, said moans comprising two blocks, and means for adjusting the distance apart of said blocks consisting of a screwed spindle with threads in an opposite direction passing through the respective blocks, substantially as described.

4.` Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed-Water pumps, comprising in combination, alever, an eccentric upon which said lever is mounted, avrotating shaft upon which said eccentric is secured, a member connected to said lever at one point, said member being capable of reciprocation by said lever, a fulcrnm on said lever capable of movement on reciprocation thereof, means for limiting the path taken by said fulcrnm on reciprocation of said lever, substantially as described.

5. Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed-water pumps, comprising in combination, a lever, an eccentric upon which said lever is mounted, a rotating shaft upon which said eccentric is secured, a member connected to said lever at one point, said member being capable of reciprocation by said lever, a fulcrnm on said lever capable of movement on reciprocation thereof, means for limiting ICO IIO

the path taken by said lever, said means comprising two surfaces,and means for adjust` ing the distance apart of said surfaces, sub-` stantially as described.

6. Apparatus for regulating the stroke of reciprocating parts such the plungers of feed-Water pumps, comprising in combination, alever, an eccentric upon which said lever is mounted, a rotating shaft upon which said eccentric is secured, a member connected to said lever at one point, said member being capable of reciprocation by said lever, a fulcrum on said lever capable of movement on reciprocation thereof, means for limiting the path taken by said lever, said means comprising two blocks, and means for adjusting the distance apart of said blocks'consisting of a screwed spindle with threads provided. in opposite directions passing through the respective blocks, substantially as described.

7. Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed water pumps, comprising in combination, a lever, an eccentric upon which said lever is centrally mounted, a rotating shaft upon which said eccentric is secured, a member connected to one end of said lever, said member being capable of reciprocation by said lever, a fulcrum on the other end of said lever capable of movement on reciprocation thereof, means for limiting the path taken by said fulcrum on reciprocation of said lever, substantially as described.

8. Apparatus for regulating the stroke of reciprocating parts such asfthe plungers of feed-water pumps, comprising in combination, a lever, an eccentric upon which said lever is .centrally mounted, a rotating shaft upon which said eccentric is secured, a member connected to one end of said lever, said member being capable of reciprocation by said lever, a fulcrum on the other endof said lever capable of movement on reciprocation thereof, means'for limiting the path taken by said lever, said means comprisingtwo surfaces, and means for adjusting the distance apart of said surfaces, substantially as described.

9. Apparatus for regulating the stroke of reciprocating parts such as the plungers of feed-water pumps, comprising in combination, a lever, an eccentric upon which said lever is centrally mounted, a rotating shaft upon which said eccentric is secured, a member connected to one end of said lever, said member being capable of reciprocation by said lever, afulcrum on the other end of said lever capable of movement on reciprocation thereof, means for limiting the path taken by said lever, said means comprising two blocks, and means for adjusting the distance apart of saidblocks consisting of a screwed spindle with threads provided in opposite directions passing through the respective blocks, substantially as described.

l0. Apparatus for regulating the stroke of reciprocating parts such as theplungers of feed -water pumps, comprising in combination, a lever, means for giving to said lever at one point a constant reciprocationa reciprocating part connected to said lever at another point, said part reciprocating by said lever, a fulcrnm on said lever capable of movement ou reciprocation thereof, means for limiting the path taken by said fulcrum on the reciprocation of said lever, a second reciprocating part, means for connecting said second reciprocating part to the first reciprocating part to permit of a lost motion of the first reciprocating part, substantially as described.y

1l. Apparatus for regulating the' stroke of plungers of feed-water pumps, comprising in combination, a lever, means for giving to said lever at one point a constant reciprocation, a reciprocating part connected to said lever at another point, a fulcrum on said lever capable of movement on reciprocation thereof, means for limiting the path taken by said fulcrum on the reciprocation of said lever, a

plunger connected to said reciprocating part,

a second plunger arranged parallel to the first, and means for connecting said second vplunger to the first plunger to permit of a lost motion of the first, consisting of a slotin the second plunger, a projecting arm carried by the first plunger, anda screw carried by said second plunger and projecting within the said slot, substantially as described.

l2. Apparatus for regulating the stroke of plungers of feed-Water pumps, comprisingin combination, a lever, an eccentric upon which said leveris mounted, a rotating shaft upon which said eccentric is secured, a reciprocating part connected to said lever at one point, said reciprocating part being capable of reciprocation by said lever, a fulcrum on said lever capable of movement on reciprocation thereof, means for limiting the path takenV by said fulcrum on the reciprocation of said lever, a plunger connected to said reciprocating part, a second plunger arranged parallel to the first, vand means for connectingsaid second plunger to the first plunger to permit of a lost motion of the rst, consisting of a slot in the second plunger, a projecting arm car` ried by the first plunger, and a screw carried" by said second plunger and projecting Within the said slot, substantially as described.

13. Apparatus for regulating the stroke of plungers of feed-water pumps, comprisinginl combination, a lever, an eccentric upon which for limiting the path taken by said fulcrum on the reciprocation of said lever, a plunger connected to said reciprocating part, a sec? ond plunger arranged parallel to the rst,

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and means for connecting said second plunger to the first plunger to permit of a lost motion of the rst, consisting of a slot in the second plunger, a projecting arrn carried by the rst plunger, and a screw carried by said second plunger and projecting within the said slof, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM ARTHUR PERCY WERNER.

\Vitnesses:

WILLIAM EDWARD EVANS, KATHLEEN KING. 

